CA2062550A1 - Optical distance measuring apparatus - Google Patents
Optical distance measuring apparatusInfo
- Publication number
- CA2062550A1 CA2062550A1 CA2062550A CA2062550A CA2062550A1 CA 2062550 A1 CA2062550 A1 CA 2062550A1 CA 2062550 A CA2062550 A CA 2062550A CA 2062550 A CA2062550 A CA 2062550A CA 2062550 A1 CA2062550 A1 CA 2062550A1
- Authority
- CA
- Canada
- Prior art keywords
- light beam
- distance measuring
- measured
- light
- optical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
- G01S17/32—Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
- G01S17/36—Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated with phase comparison between the received signal and the contemporaneously transmitted signal
Abstract
A two-eyed type optical distance measuring apparatus operable in accordance with a phase difference detecting process to optically measure a distance between the apparatus and an object to be measured is disclosed. To determine the distance between the apparatus and the object to be measured, a phase difference between the phase of a reflected light beam reflected from the object to be measured and the optical phase of a reference light beam derived from partial division of a distance measuring light beam emitted from a light source is detected and calculated. The apparatus includes as essential components a light source disposed in a housing on the light emitting side to emit a modulated distance measuring light beam therefrom toward the object to be measured, a light emitting element in a housing on the light receiving side and a reference light introducing mechanism for introducing a part of the modulated distance measuring light beam emitted from the light source into the light receiving element via an optical fiber. To prepare the reference light beam, a shade is arranged at the intermediate part of the housing on the light emitting side. In addition, an iris mechanism is disposed on the incident side of the optical fiber to variably adjust an optical quantity of the reference light beam.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3-72603 | 1991-03-12 | ||
JP3072603A JPH04283683A (en) | 1991-03-12 | 1991-03-12 | Optoelectronic distance meter |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2062550A1 true CA2062550A1 (en) | 1992-09-13 |
CA2062550C CA2062550C (en) | 1998-10-27 |
Family
ID=13494138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002062550A Expired - Fee Related CA2062550C (en) | 1991-03-12 | 1992-03-11 | Optical distance measuring apparatus |
Country Status (4)
Country | Link |
---|---|
US (1) | US5239353A (en) |
EP (1) | EP0503593A3 (en) |
JP (1) | JPH04283683A (en) |
CA (1) | CA2062550C (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999005661A1 (en) * | 1997-07-22 | 1999-02-04 | Auto-Sense, Ltd. | Multi-frequency photoelectric detection system |
DE10027239A1 (en) * | 2000-05-31 | 2001-12-06 | Sick Ag | Distance measuring method and distance measuring device |
US6821017B1 (en) * | 2001-08-06 | 2004-11-23 | Steven C. Tankersley | Radiated signal measuring device for radiographic imaging equipment |
JP5609581B2 (en) * | 2010-11-18 | 2014-10-22 | セイコーエプソン株式会社 | Optical position detection device and device with position detection function |
CN102914777B (en) * | 2012-11-05 | 2014-11-05 | 张周新 | Photoelectric ranging device of robot |
CN111649384A (en) * | 2015-06-09 | 2020-09-11 | 广东美的制冷设备有限公司 | Indoor unit of air conditioner |
CN108802752A (en) * | 2018-09-07 | 2018-11-13 | 深圳莱特光电股份有限公司 | The optics module of barrier is surveyed for robot ranging |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU6455880A (en) * | 1979-12-07 | 1981-06-11 | Hewlett-Packard Company | Velocity corrected range system |
DE3219423C2 (en) * | 1981-06-09 | 1986-04-30 | MTC, Meßtechnik und Optoelektronik AG, Neuenburg/Neuchâtel | Distance measuring method and device for its implementation |
JPS5960271A (en) * | 1982-09-29 | 1984-04-06 | Nissan Motor Co Ltd | Optical radar apparatus |
JP2832604B2 (en) * | 1988-06-02 | 1998-12-09 | 株式会社ソキア | Lightwave rangefinder |
JP2909742B2 (en) * | 1988-06-29 | 1999-06-23 | 株式会社トプコン | Delay time measuring device |
US5082364A (en) * | 1990-08-31 | 1992-01-21 | Russell James T | Rf modulated optical beam distance measuring system and method |
-
1991
- 1991-03-12 JP JP3072603A patent/JPH04283683A/en active Pending
-
1992
- 1992-03-06 US US07/846,817 patent/US5239353A/en not_active Expired - Fee Related
- 1992-03-11 EP EP19920104181 patent/EP0503593A3/en not_active Withdrawn
- 1992-03-11 CA CA002062550A patent/CA2062550C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0503593A3 (en) | 1993-01-13 |
CA2062550C (en) | 1998-10-27 |
JPH04283683A (en) | 1992-10-08 |
US5239353A (en) | 1993-08-24 |
EP0503593A2 (en) | 1992-09-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |